Sash-holder



(No Model.)

W. A. BOMAR. SASH HOLDER.

No. 477,291. Patented June 21, 1892.

NITED STATES IVILLIAM A. BOMAR, OF METROPOLIS CITY, ILLINOIS.

SASH-HOLD'ER.

SPECIFICATION forming part of Letters Patent No. 477,291, dated June 21, 1899.

Application filed April 16,1892. Serial No. 429,384. (No model.)

To all whom it may concern:

Be it known that I, \VILLIAM A. BOMAR, a citizen of the United States, residing at Metropolis City, in the county of Massac and State of Illinois, have invented certain new and useful Improvements in Sash Locksor Fasteners; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to that class of combined sash holders and locks, which comprise a rod fastened either to the window frame or the sash and a double cam attached to the sash or frame, according to the part to which the rod is secured, which co-operates with said rod to hold or look the sash either in a raised or lowered position.

My object, with others to hereinafter appear, is to provide a holder of the class described, which with, say, the lower sash raised a short distance, as for ventilating purposes, and locked in the usual way against descent, and an attempt be made to raise the sash without manipulating the holder will automatically reverse itself and prevent raising of the sash.

To this end and to such others as the invention may pertain the same consists in the sash holder and lock constructed substantially as hereinafter specified and shown in the accompanying drawings, in which- Figure 1 is a perspective view of a portion of a window equipped with my invention; Fig. 2, a vertical section through the clamping device, and Fig. 3 a horizontal section thereof upon the line 3 3 of Fig. 2.

As shown in the drawings, the rod Ais attached to the window-sash and the double cam B to the frameor casing. Said cam is pivoted in a casing O, which incloses or embraces the rod A, and has the two clampingfaces I) and 1) arranged on opposite sides of its pivot 0 above and below the same, either of which faces is adapted to be caused to bind against the rod A. lVhen the lower face 12 engages said rod, the sash will be held against being raised, and any tendency to raise will,

owing to the shape of the face, simply cause said face to more tightly bind against the rod, while the upper face I) will prevent lowering of the sash. Owing to the shape of the face, the weight of the sash and its downward tendency simply adds to the effectiveness of the lock. The cam has a short outwardly-extending handle I) by which it maybe moved to cause either cam to become operative. The shape of the cam B is such that when said handle is at a right angle to the rod A both faces 1) and b will be out of contact with the rod and not interfere with a movement of the sash up or down. In the center of the cam, between the two faces and extending in a line with the handle b is a recess D, whose outer end is adjacent to the rod A, and partially 1n and partially out of said recess is a pin E, which is forced normally outward into contact with the rod A by the coil-spring E, that is placed in said recess behind said pin. The outer end of said pin is preferably made sharp or V-shaped, and is designed to engageand co-operate with teeth or serrations a, provided on the side of the rod A under the following circumstances, viz: Should the sash be raised only a short distance and then looked against descent by moving the upper face 1) into contact with the rod A as the pin E is forced against the teeth a, on said rod by the spring E, the effect of raising the sash will, by reason of the engagement of the rod-teeth with said pin, swing the cam upward, so as to throw the upper face I) out of contact with the rod and the lower face 1) into contact, and thus prevent further movement of the sash upward. On releasing the sash it will fall to and will be locked in its former position, as said pin will then swing the cam in a reverse direction to put the upper face 1) into contact with the rod.

' It will be seen that the provision of the pin enables the cam to look a sash against movement in both directions, a feature particularly valuable where it is desirable to raise a window but a few inches, as for ventilating purposes, as it prevents the complete raising of the window by unwarranted persons, as burglars and the like.

With the cam turned so that both faces shall be out of contact with the rod, the window can easily be raised and-lowered, as the pin will simply click or slip over the teeth on the rod A. If desired, the teeth may be omitted from the rod A, and the end of the pin E made sharp enough to bite into the smooth side thereof sufficiently to accomplish the swinging of the cam.

The rod-engaging faces I) and b are made grooved or V-shaped, as shown, so as not to engage the rod on each side of the teeth a and not impinge against them.

The spring-pressed pin E is not only valuable for the indicated purpose, butit also serves to maintain either of the faces I) in engagement with the rod,for the reason that the movement of the cam to throw a face away from the rod involves the compression of the spring E. This is useful in that when the sash, for instance, is down and it is desired to raise the same it is necessary simply to move the upper face 6 into contact with the rod and then raise the sash to the desired point, whereupon without further operation of the cam the sash will be locked against descent. This, of course, is only possible with a smooth untoothed rod and blunt pin E. The pivot of the cam B is preferably a headed screw G, having a shoulder g to limit its movement to prevent the sides of the cam-casing being caused to bind against the cam and make it difficult to move.

My invention, of course, is to be applied to the upper sashes as Well as the lower.

I claim- 1. In a sash holder and lock,in combination, a rod or bar, cam having two faces, either of which may engage said bar, and a springpressed pin carried by said cam between its faces, which impinges against said bar, substantially as shown and described.

2. In a sash holder and lock, in combination, a rod or bar havinga toothed side, apivoted cam having alternately-operative faces, each of which is grooved so as to engage the bar on each side of its teeth, and a springpressed'pin having a V-shaped end to engage said teeth, substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM A. BOMAR.

Witnesses:

HENRY J. HUMMA, ANDREW E. MILLER. 

